S.H.E.R.M.A.N

S.H.E.R.M.A.N

Satellite High Elevation and Radar Monitoring Arrangement Network

S.H.E.R.M.A.N is a browser-based satellite tracking console. It plots hundreds of tracked objects on a live 3D globe: NASA science missions and the ISS, the SpaceX Starlink and Dragon fleet, other active payloads, and debris from three well-known break-ups (the 2007 Fengyun-1C anti-satellite test and the 2009 collision between Cosmos 2251 and Iridium 33).

[WHERE THE DATA COMES FROM]

Orbital elements come from the public General Perturbations catalogue on Space-Track.org. A GitHub Action runs sherman_fetch.py every 4 hours and commits a fresh snapshot.json. Your browser then works out every position itself with the SGP4 model (satellite.js), so the globe keeps moving even if the connection drops. If the snapshot can't load, a simulation of ten demo orbits runs instead and the panel says so.

Snapshot: loading...

[WHAT YOU CAN DO]

• Target sector: pick or click a country to list everything currently above it. Click empty ocean or space to clear it.
• Observer warnings: set your location to see what is overhead now and what passes next, with optional alerts.
• Track a target: click any satellite for its full orbit, its ground trajectory for the next one and a half orbits with time marks, its coverage footprint, live telemetry and a video feed where one exists.
• Notifications: the bell keeps every alert and system event, with Track buttons and optional desktop alerts. The chain-link button copies a link to exactly what you are looking at.
• Time machine: run time faster, backwards, or jump to an exact date, then hit LIVE to return.

[CONTROLS]

[CREDITS]

CesiumJS, satellite.js, topojson-client, Natural Earth borders via world-atlas, and orbital data from Space-Track.org.